Angevin is the name applied to two distinct medieval dynasties which originated as counts (from 1360, dukes) of the western French province of Anjou (of which angevin is the adjectival form), but later came to rule far greater areas including England, Hungary and Poland.
The first Angevin dynasty, known from the 12th century as the Plantagenet dynasty, came (with its Lancastrian and Yorkist branches) to rule England (1154-1485), Normandy (1144-1204, 1346-1360 and 1415-1450), and Gascony and Guyenne (1153-1453), but lost Anjou itself to the French crown in 1206.
The name "Plantagenet" originates from the nickname "Plante-geneste" often applied to Geoffrey of Anjou, father of King Henry II of England, in reference to the broom plant that became his emblem, possibly from his customarily wearing a sprig of it.
The surname "Plantagenet" has been retrospectively applied to the descendants of Geoffrey of Anjou without historical justification: it is simply a convenient method of referring to people who had, in fact, no surname. The first descendant of Geoffrey to use the surname was Richard Plantagenet, Duke of York (father of Edward IV of England) who apparently assumed it about 1448.1
In 1266 Charles was granted the crown of Naples and Sicily by the Pope in return for overthrowing the territories' Hohenstaufen rulers. Charles was driven out of Sicily in 1282, but his successors ruled Naples until 1442.